2006 GMC Sierra service brakes problems
20 owner complaints filed with NHTSA name the service brakes on the 2006 GMC Sierra — 38% of all complaints for this model year.
What owners report
“Total brake failure while in motion. Corroded brake line ruptured causing immediate loss of all fluid. Had this happened 5 minutes earlier, I would have been on a four lane highway in bumper to bumper christmas traffic. At 70 years old I can only imagine how catastrophic an accident my reflexes…”
filed Dec 26, 2015
“Brake pedal went to floor almost causing an accident before the vehicle came to a stop. Before the service light came on. The service light did come eventually at which time we checked the master cylinder which was extremely low so we filled it thinking that was the problem. The next day we noticed…”
filed Jul 20, 2015
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
PIT3665E · Service Bulletin/Repair Instructions · issued Jan 31, 2017
Service Brakes problems in other Sierra years
| Year | Reports | Share |
|---|---|---|
| 2017 Sierra | 19 | 31% |
| 2015 Sierra | 2 | 4% |
| 2013 Sierra | 4 | 10% |
| 2012 Sierra | 3 | 10% |
| 2011 Sierra | 3 | 7% |
| 2010 Sierra | 3 | 9% |
| 2009 Sierra | 1 | 3% |
| 2008 Sierra | 1 | 1% |
| 2007 Sierra | 12 | 20% |
| 2005 Sierra | 27 | 23% |
| 2004 Sierra | 44 | 23% |
| 2003 Sierra | 45 | 22% |
Other reported problem areas on the 2006 GMC Sierra
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.